Process of making microporous films of UHMWPE

Details Process of making microporous films of UHMWPE Process of making microporous films of UHMWPE

1991-09-03

1993-09-28

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264154, 264204, 26421113, 2642888, 2642896, 2642902, 264344, B29C 6720

Patent

active

052484610

ABSTRACT:
The invention relates to microporous films of ultrahigh molecular weight polyethylene and to a process for the preparation thereof by forming a solution of UHMWPE in an evaporable solvent into a film and evaporating the solvent from the film at a temperature below the dissolution temperature, the shrinking tendency occurring in the film being prevented in at least one direction in the plane of the film.

REFERENCES:
patent: 3308073 (1967-03-01), Kepple
patent: 4247498 (1981-01-01), Castro
patent: 4255376 (1981-03-01), Soehngen
patent: 4539256 (1985-09-01), Shipman
patent: 4588633 (1986-05-01), Kono et al.
patent: 4734196 (1988-03-01), Kono et al.
patent: 4778601 (1988-10-01), Lopatin et al.
patent: 4874567 (1989-10-01), Lopatin et al.

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